80820804 has 48 divisors (see below), whose sum is σ = 198761472. Its totient is φ = 25509792.

The previous prime is 80820793. The next prime is 80820809. The reversal of 80820804 is 40802808.

It is not an unprimeable number, because it can be changed into a prime (80820809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27007 + ... + 29849.

It is an arithmetic number, because the mean of its divisors is an integer number (4140864).

Almost surely, 2^80820804 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80820804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99380736).

80820804 is an abundant number, since it is smaller than the sum of its proper divisors (117940668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80820804 is a wasteful number, since it uses less digits than its factorization.

80820804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2976 (or 2974 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 30.

The square root of 80820804 is about 8990.0391545310. The cubic root of 80820804 is about 432.3555671731.

It can be divided in two parts, 808 and 20804, that added together give a palindrome (21612).

The spelling of 80820804 in words is "eighty million, eight hundred twenty thousand, eight hundred four".